CN210601710U - Steam supply device for air heater of boiler air preheater - Google Patents
Steam supply device for air heater of boiler air preheater Download PDFInfo
- Publication number
- CN210601710U CN210601710U CN201921617629.5U CN201921617629U CN210601710U CN 210601710 U CN210601710 U CN 210601710U CN 201921617629 U CN201921617629 U CN 201921617629U CN 210601710 U CN210601710 U CN 210601710U
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- CN
- China
- Prior art keywords
- bath heating
- boiler
- water bath
- air
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 91
- 238000010438 heat treatment Methods 0.000 claims abstract description 70
- 239000000779 smoke Substances 0.000 claims abstract description 28
- 239000003517 fume Substances 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 12
- 239000003546 flue gas Substances 0.000 abstract description 12
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model discloses a steam supply device for a boiler air preheater air heater, which comprises an air heater and an air preheater, wherein the gas transmission end of the air heater is hermetically connected with the gas inlet end of the air preheater, and the steam supply device also comprises a water-bath heating mechanism, a first temperature sensor and a third electromagnetic valve, the water-bath heating mechanism and the third electromagnetic valve are connected in parallel on the gas inlet pipeline of the air heater, and the first temperature sensor is arranged at the smoke exhaust end of the boiler; when the temperature that the boiler discharged fume was higher, boiler flue gas partly got into water bath heating mechanism, after water bath heating mechanism reached the settlement temperature, the outside air flowed in the fan heater after heating up via water bath heating mechanism, and when the outside air flowed in the fan heater, the temperature has risen, can reduce the heat transport of steam turbine to the boiler, reduces the thermal loss of boiler, improves the efficiency that generates heat of boiler, make full use of the flue gas heat of boiler.
Description
Technical Field
The utility model belongs to the technical field of the boiler burning, concretely relates to boiler air preheater air heater steam supply device.
Background
The air heater raises the temperature of air entering the air preheater and the wall temperature of the air preheater, thereby preventing low-temperature corrosion.
In the original air preheater air heater steam supply system, the steam turbine conveys the heat of the boiler to the air heater in a low-pressure steam extraction mode, the increase of the low-pressure steam extraction quantity enables the cycle efficiency of the steam turbine to be improved, the thermal efficiency of the boiler to be reduced, and the thermal efficiency of the boiler is lost more when the air preheater air heater is used for a long time.
SUMMERY OF THE UTILITY MODEL
To solve the problems set forth in the background art described above. The utility model provides a boiler air preheater air heater steam supply device has the characteristics of increasing the thermal efficiency.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a boiler air preheater air heater steam supply device, includes air heater and air preheater, the gas transmission end of air heater with the inlet end sealing connection of air preheater still includes water bath heating mechanism, first temperature sensor and third solenoid valve, water bath heating mechanism with the third solenoid valve is parallelly connected on the admission line of air heater, first temperature sensor installs the end of discharging fume at the boiler, water bath heating mechanism includes water bath heating cabinet and the pipe of discharging fume, the last sealed fixedly connected with a plurality of branch pipe of the pipe of discharging fume, the branch pipe is located the inside of water bath heating cabinet, the one end of the pipe of discharging fume with the end sealing connection of discharging fume of boiler, and it has first solenoid valve to establish ties, first temperature sensor with first solenoid valve signal connection, the inside of water bath heating cabinet still installs the coiled pipe, the one end of coiled pipe passes through pipeline and outside air inlet equipment sealing connection, and the other end of the coiled pipe is connected with the air inlet end of the air heater in a sealing way, the outer wall of the water bath heating box is fixedly connected with a second temperature sensor, and the second temperature sensor is in signal connection with the second electromagnetic valve and the third electromagnetic valve.
Preferably, a plurality of heat conduction fins which are arranged at equal intervals are integrally formed on the periphery of the outer wall of the branch pipe.
Preferably, a plurality of the branch pipes are arranged horizontally at equal intervals.
Preferably, the smoke exhaust pipe is positioned outside the water bath heating box.
Preferably, the top surface fixedly connected with water injection pipe of water bath heating cabinet, the water injection pipe with the inside of water bath heating cabinet link up.
Preferably, the bottom surface of the water bath heating box is fixedly connected with a drain pipe, and the drain pipe is communicated with the inside of the water bath heating box.
Compared with the prior art, the beneficial effects of the utility model are that:
when the temperature of discharging fume at the boiler is higher, boiler flue gas partly gets into water bath heating mechanism, after water bath heating mechanism reaches the settlement temperature, outside air heats the back via water bath heating mechanism and flows in the fan heater, when outside air flows in the fan heater, the temperature has risen, can reduce the heat transport of steam turbine to the boiler, reduce the thermal loss of boiler, improve the efficiency of generating heat of boiler, and simultaneously, the flue gas of make full use of boiler, and the specific heat capacity of water is great, the heat of the flue gas of fully absorption boiler, carry out the short time and store, the high-usage, reduce the heat loss.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a block flow diagram of the present invention;
FIG. 2 is a schematic structural view of a water bath heating mechanism of the present invention;
fig. 3 is a schematic view of the branch pipe structure of the present invention.
In the figure: 1. a warm air blower; 2. an air preheater; 3. a water bath heating mechanism; 31. a water bath heating box; 311. a water injection pipe; 312. a drain pipe; 32. a smoke exhaust pipe; 321. a branch pipe; 322. a first solenoid valve; 323. a heat conductive fin; 33. a serpentine tube; 331. a second solenoid valve; 34. a second temperature sensor; 4. a first temperature sensor; 5. and a third solenoid valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides the following technical solutions: a steam supply device of a boiler air preheater air heater comprises an air heater 1 and an air preheater 2, wherein a gas delivery end of the air heater 1 is connected with a gas inlet end of the air preheater 2 in a sealing manner, the steam supply device also comprises a water bath heating mechanism 3, a first temperature sensor 4 and a third electromagnetic valve 5, the water bath heating mechanism 3 and the third electromagnetic valve 5 are connected on a gas inlet pipeline of the air heater 1 in parallel, the first temperature sensor 4 is arranged at a smoke exhaust end of a boiler, the water bath heating mechanism 3 comprises a water bath heating box 31 and a smoke exhaust pipe 32, the smoke exhaust pipe 32 is fixedly connected with a plurality of branch pipes 321 in a sealing manner, the branch pipes 321 are positioned inside the water bath heating box 31, one end of the smoke exhaust pipe 32 is connected with the smoke exhaust end of the boiler in a sealing manner and is connected with a first electromagnetic valve 322 in series, the first temperature sensor 4 is connected with the first electromagnetic valve 322 in a signal manner, a coiled pipe 33 is also arranged inside the water bath heating box 31, one, and the second electromagnetic valve 331 is connected in series, the other end of the coiled pipe 33 is connected with the air inlet end of the air heater 1 in a sealing manner, the outer wall of the water bath heating box 31 is fixedly connected with a second temperature sensor 34, and the second temperature sensor 34 is in signal connection with the second electromagnetic valve 331 and the third electromagnetic valve 5.
In the embodiment, when in use, the steam turbine conveys the heat of the boiler to the air heater 1 in a low-pressure steam extraction mode, the smoke exhaust end of the boiler is hermetically connected with the smoke inlet end of the air preheater 2, the water bath heating box 31 is filled with water, the boiler has low heat when beginning to burn, the smoke temperature at the smoke exhaust end of the boiler is low, at the moment, the third electromagnetic valve 5 is in an open state, external air enters the air heater 1 through a pipeline where the third electromagnetic valve 5 is located, the air is preheated by the air heater 1, then is input into the air preheater 2, is heated again by the air preheater 2, then is conveyed to the smoke inlet end of the boiler, and finally enters the boiler, so that the combustion efficiency is improved, the temperature in the boiler continuously rises along with further combustion, the smoke temperature at the smoke exhaust end of the boiler is high, when the temperature reaches the set temperature of the first temperature sensor 4, the first electromagnetic valve 322 on the smoke exhaust pipe 32 is opened, when passing through the branch pipe 321, because the branch pipe 321 is positioned inside the water bath heating box 31, the water bath heating box 31 is filled with water, the heat of the high-temperature flue gas is dissipated through the exhaust pipe 32 and absorbed by the water in the water bath heating box 31, the water in the water bath heating box 31 is continuously heated, when the temperature of the water in the water bath heating box 31 reaches the set value of the second temperature sensor 34, the second electromagnetic valve 331 is opened, the third electromagnetic valve 5 is closed, the external air enters the air heater 1 through the coil pipe 33, when the external air passes through the coil pipe 33, the air in the coil pipe 33 can be heated due to the higher temperature of the water in the water bath heating box 31, so that the temperature of the air is already raised when the air flows into the air heater 1, the heat transmission of the boiler by a steam turbine can be reduced, the loss of the heat of the boiler is reduced, and the heating efficiency of the boiler is improved, simultaneously, make full use of boiler's flue gas, and the specific heat capacity of water is great, but the heat of the flue gas of full absorption boiler carries out the short time storage, improves the utilization ratio, reduces heat and runs off.
Specifically, outer wall a week integrated into one piece of branch pipe 321 has the heat conduction fin 323 of a plurality of equidistance interval arrangement, and the high temperature flue gas heat to in the branch pipe 321 that can be better is dispersed, improves heat-conduction efficiency.
Specifically, a plurality of branch pipes 321 are arranged horizontally at equal intervals, so that water in the water bath heating tank 31 can be uniformly heated, the heat absorption is balanced, and the heating efficiency is improved.
Specifically, the smoke exhaust pipe 32 is located outside the water bath heating box 31, the connection between the smoke exhaust pipe 32 and the branch pipe 321 is fragile and easy to leak, and the smoke exhaust pipe 32 is located outside the water bath heating box 31, so that the installation and maintenance in the later period are facilitated, and the use is convenient.
Specifically, a water injection pipe 311 is fixedly connected to the top surface of the water bath heating tank 31, and the water injection pipe 311 is communicated with the inside of the water bath heating tank 31 and injects water into the water bath heating tank 31 through the water injection pipe 311.
Specifically, the drain pipe 312 is fixedly connected to the bottom surface of the water bath heating tank 31, the drain pipe 312 is communicated with the inside of the water bath heating tank 31, and water in the water bath heating tank 31 can be discharged through the drain pipe 312, so that the water in the water bath heating tank 31 can be replaced.
The utility model discloses a theory of operation and use flow: when in use, the steam turbine conveys the heat of the boiler into the air heater 1 in a low-pressure steam extraction mode, the smoke exhaust end of the boiler is hermetically connected with the smoke inlet end of the air preheater 2, water is injected into the water bath heating box 31, the heat of the boiler is low when the boiler starts to burn, the smoke temperature at the smoke exhaust end of the boiler is low, at the moment, the third electromagnetic valve 5 is in an open state, external air enters the air heater 1 through a pipeline where the third electromagnetic valve 5 is located, the air is preheated by the air heater 1 and then is input into the air preheater 2, the air is reheated by the air preheater 2 and then conveyed to the smoke inlet end of the boiler, and finally enters the boiler to accelerate the combustion efficiency, the temperature in the boiler continuously rises along with further combustion, so that the smoke temperature at the smoke exhaust end of the boiler is high, and when the temperature reaches the set temperature of the first temperature sensor 4, the first electromagnetic valve 322 on the smoke exhaust pipe 32 is opened, when passing through the branch pipe 321, because the branch pipe 321 is positioned inside the water bath heating box 31, the water bath heating box 31 is filled with water, the heat of the high-temperature flue gas is dissipated through the exhaust pipe 32 and absorbed by the water in the water bath heating box 31, the water in the water bath heating box 31 is continuously heated, when the temperature of the water in the water bath heating box 31 reaches the set value of the second temperature sensor 34, the second electromagnetic valve 331 is opened, the third electromagnetic valve 5 is closed, the external air enters the air heater 1 through the coil pipe 33, when the external air passes through the coil pipe 33, the air in the coil pipe 33 can be heated due to the higher temperature of the water in the water bath heating box 31, so that the temperature of the air is already raised when the air flows into the air heater 1, the heat transmission of the boiler by a steam turbine can be reduced, the loss of the heat of the boiler is reduced, and the heating efficiency of the boiler is improved, simultaneously, make full use of boiler's flue gas, and the specific heat capacity of water is great, but the heat of the flue gas of full absorption boiler carries out the short time storage, improves the utilization ratio, reduces heat and runs off.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a boiler air preheater air heater steam supply device, includes air heater (1) and air preheater (2), the gas transmission end of air heater (1) with the inlet end sealing connection of air preheater (2), its characterized in that: still include water bath heating mechanism (3), first temperature sensor (4) and third solenoid valve (5), water bath heating mechanism (3) with third solenoid valve (5) are parallelly connected on the admission line of air heater (1), the end of discharging fume at the boiler is installed in first temperature sensor (4), water bath heating mechanism (3) are including water bath heating box (31) and discharge fume pipe (32), it goes up sealed fixedly connected with a plurality of branch pipe (321) to discharge fume pipe (32), branch pipe (321) are located the inside of water bath heating box (31), the one end of discharging fume pipe (32) with the end sealing connection of discharging fume of boiler, and it has first solenoid valve (322) to establish ties, first temperature sensor (4) with first solenoid valve (322) signal connection, coiled pipe (33) are still installed to the inside of water bath heating box (31), one end of the coiled pipe (33) is connected with an external air inlet device in a sealing mode through a pipeline, a second electromagnetic valve (331) is connected in series, the other end of the coiled pipe (33) is connected with an air inlet end of the air heater (1) in a sealing mode, a second temperature sensor (34) is fixedly connected to the outer wall of the water bath heating box (31), and the second temperature sensor (34) is connected with the second electromagnetic valve (331) and the third electromagnetic valve (5) in a signal mode.
2. The steam supply device of the air preheater air heater of the boiler according to claim 1, wherein: a plurality of heat conducting fins (323) which are arranged at equal intervals are integrally formed on the periphery of the outer wall of the branch pipe (321).
3. The steam supply device of the air preheater air heater of the boiler according to claim 1, wherein: a plurality of the branch pipes (321) are horizontally arranged at equal intervals.
4. The steam supply device of the air preheater air heater of the boiler according to claim 1, wherein: the smoke exhaust pipe (32) is positioned outside the water bath heating box (31).
5. The steam supply device of the air preheater air heater of the boiler according to claim 1, wherein: the top surface fixedly connected with water injection pipe (311) of water bath heating case (31), water injection pipe (311) with the inside of water bath heating case (31) link up.
6. The steam supply device of the air preheater air heater of the boiler according to claim 1, wherein: the bottom surface fixedly connected with drain pipe (312) of water bath heating case (31), drain pipe (312) with the inside of water bath heating case (31) link up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921617629.5U CN210601710U (en) | 2019-09-26 | 2019-09-26 | Steam supply device for air heater of boiler air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921617629.5U CN210601710U (en) | 2019-09-26 | 2019-09-26 | Steam supply device for air heater of boiler air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210601710U true CN210601710U (en) | 2020-05-22 |
Family
ID=70697338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921617629.5U Withdrawn - After Issue CN210601710U (en) | 2019-09-26 | 2019-09-26 | Steam supply device for air heater of boiler air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210601710U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594777A (en) * | 2019-09-26 | 2019-12-20 | 中国电建集团河南工程有限公司 | Steam supply system of air heater of boiler air preheater |
-
2019
- 2019-09-26 CN CN201921617629.5U patent/CN210601710U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594777A (en) * | 2019-09-26 | 2019-12-20 | 中国电建集团河南工程有限公司 | Steam supply system of air heater of boiler air preheater |
| CN110594777B (en) * | 2019-09-26 | 2024-04-09 | 中国电建集团河南工程有限公司 | Steam supply system of air heater of boiler air preheater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200522 Effective date of abandoning: 20240409 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20200522 Effective date of abandoning: 20240409 |